Enter the total draw weight (pounds) and the ${V2} into the Arrow Spine Weight Calculator. The calculator will evaluate the Arrow Spine Weight. 

Arrow Spine Weight Formula

The following two example problems outline the steps and information needed to calculate the Arrow Spine Weight.

ASPW = DW * 6.75


  • ASPW is the Arrow Spine Weight (grains)
  • DW is the total draw weight (pounds) 

To calculate the arrow spine weight, multiply the draw weight by 6.75.

How to Calculate Arrow Spine Weight?

The following steps outline how to calculate the Arrow Spine Weight.

  1. First, determine the total draw weight (pounds). 
  2. Next, gather the formula from above = ASPW = DW * 6.75.
  3. Finally, calculate the Arrow Spine Weight.
  4. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

total draw weight (pounds) = 40

ASPW = DW * 6.75 = ?